Headline Numbers

As of the latest CDC data release on July 20, 2020 there are:

Where I live, in Somerville, MA, as of July 20, 2020 there are:

Consequently, in the United States, there are now:

Globally, as of the latest WHO data release on July 21, 2020, there are:

Overall Covid Cases In The USA

Regions are defined as follows: Northeast (CT, ME, MA, NH, RI, VT, NJ, NY, PA), Midwest (IN, IL, MI, OH, WI, IA, KS, MN, MO, NE, ND, SD), South (AL, AR, DC, DE, FL, GA, KY, LA, MD, MS, NC, OK, SC, TN, TX, VA, WV) and West (AZ, CO, ID, NM, MT, UT, NV, WY, AK, CA, HI, OR, WA).

US Cases Compared to World Cases

Covid Cases in Somerville, MA and MA

Latest Cases in Boston Area (Today, One Week Ago, Two Weeks Ago)

Date County Name Cases Deaths New Cases New Deaths
July 20, 2020 Middlesex County 24958 1948 72 1
July 13, 2020 Middlesex County 24536 1921 53 5
July 06, 2020 Middlesex County 24193 1882 40 3
July 20, 2020 Norfolk County 9737 968 38 1
July 13, 2020 Norfolk County 9485 958 23 0
July 06, 2020 Norfolk County 9284 940 11 0
July 20, 2020 Suffolk County 20621 1035 20 0
July 13, 2020 Suffolk County 20342 1020 41 0
July 06, 2020 Suffolk County 20014 1008 29 1

New Covid Cases By State

The plot below shows the number of new COVID cases by state. Note that each figure has its own y axis; this is done so that trends can be seen within each state. Log scales can make the difference between 100 and 1000 cases hard to discern and a common y axis causes states like NY and CA to swamp states like NC. Negative new cases can occur when States revise their total number of cases downwards, as Hawaii did between June 30, 2020 and July 1, 2020.

COVID Cases per 1,000 Residents by State

This figure shows the number of COVID cases per 1,000.

Latest County Case Map

Latest County Death Map

Counties with the Most Cases Over Time

Date State County Name Cases Deaths
2020-07-20 CA Los Angeles County 159045 4104
2020-07-20 IL Cook County 99052 4777
2020-07-20 AZ Maricopa County 96711 1485
2020-07-20 FL Miami-Dade County 87035 1309
2020-07-20 NY Queens County 67079 7137
2020-07-01 CA Los Angeles County 105507 3402
2020-07-01 IL Cook County 90911 4581
2020-07-01 NY Queens County 65455 7059
2020-07-01 NY Kings County 59742 7104
2020-07-01 AZ Maricopa County 52266 817
2020-06-01 IL Cook County 78495 3658
2020-06-01 NY Queens County 62094 6271
2020-06-01 NY Kings County 56053 6742
2020-06-01 CA Los Angeles County 55968 2362
2020-06-01 NY Bronx County 45359 4480
2020-05-01 NY Queens County 52274 5111
2020-05-01 NY Kings County 45519 5320
2020-05-01 IL Cook County 38668 1673
2020-05-01 NY Bronx County 37785 3527
2020-05-01 NY Nassau County 36161 1720

Hospitalizations By State

Patients Currently in the ICU

Patients Currently on Ventilators

Cumulative Cases by County in the Northeast

Cumulative Cases by State Over Time

Cumulative Deaths by State Over Time

Daily Percent Positive Cases

According to the WHO the positive rate should be below 5%.1 Days above the threshold are denoted in red, days below are in blue. Note that the variables currently used for these plots –positiveIncrease and negativeIncrease– are being phased out and will be replaced by positiveCasesViral and negativeCasesViral.

Partisanship and COVID Cases

Variants of Select Figures

Week to Week Changes in COVID Cases

Confirmed Cases as a Percentage of State Population

The two sets of points are confirmed cases (black), and potential cases (grey) which are confirmed cases times ten. For herd immunity, typically 70-90% of a population needs immunity.2

  1. https://coronavirus.jhu.edu/testing/tracker/overview↩

  2. See https://www.jhsph.edu/covid-19/articles/achieving-herd-immunity-with-covid19.html↩